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19 lines
902 B
Plaintext
19 lines
902 B
Plaintext
XORSearch is a program to search for a given string in an XOR or
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ROL encoded binary file. An XOR encoded binary file is a file where
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some (or all) bytes have been XORed with a constant value (the key).
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A ROL (or ROR) encoded file has it bytes rotated by a certain number
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of bits (the key). XOR and ROL/ROR encoding is used by malware
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programmers to obfuscate strings like URLs.
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XORSearch will try all XOR keys (0 to 255) and ROL keys (1 to 7)
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when searching. I programmed XORSearch to include key 0, because
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this allows to search in an unencoded binary file (X XOR 0 equals
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X).
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If the search string is found, XORSearch will print it until the 0
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(byte zero) is encountered or until 50 characters have been printed,
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which ever comes first. 50 is the default value, it can be changed
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with option -l. Unprintable characters are replaced by a dot.
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WWW: https://blog.didierstevens.com/programs/xorsearch/
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